J/A+A/468/151 Nearby open clusters radii and masses (Piskunov+, 2007) ================================================================================ Towards absolute scales for the radii and masses of open clusters. Piskunov A.E., Schilbach E., Kharchenko N.V., Roeser S., Scholz R.-D. =2007A&A...468..151P ================================================================================ ADC_Keywords: Clusters, open ; Morphology Keywords: Galaxy: open clusters and associations: general - solar neighbourhood - Galaxy: stellar content Description: The table presents tidal parameters and masses of 236 open clusters in the nearest kiloparsecs around the Sun. The parameters are derived from a fitting of three-parameter King profiles to the the observed density distribution. The clusters are sub-sample of the Catalogue of Open Cluster Data and their members are selected from high precision homogeneous all sky catalogue ASCC-2.5 (Kharchenko, 2001, Cat. ). Up to four cluster membership samples in wide cluster area are considered for every cluster and the best solution is presented in the table. Clusters in the table are sorted by numbers in the COCD order. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table2.dat 110 236 King parameters and tidal masses for 236 open clusters -------------------------------------------------------------------------------- See also: I/280 : All-sky Compiled Catalogue of 2.5 million stars (Kharchenko 2001) J/A+A/438/1163 : Catalogue of Open cluster Data (COCD) (Kharchenko+, 2005) J/A+A/440/403 : 109 new Galactic open clusters (COCD1) (Kharchenko+, 2005) Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 4 I4 --- COCD COCD number (>1000 for COCD1) 6- 22 A17 --- Name Cluster designation (NGC, IC or other) 24- 29 F6.2 deg GLON Galactic longitude 31- 36 F6.2 deg GLAT Galactic latitude 38- 41 I4 pc Dist Heliocentric distance 43- 46 F4.2 mag E(B-V) Colour-excess 48- 51 F4.2 [yr] logt Logarithm of age 53- 56 F4.2 deg r1 Empirical angular radius of the core 58- 61 F4.2 deg r2 Empirical angular radius of the cluster 63 I1 --- Sol [1-4] Number of the acceptable solutions of King's parameters from 4 membership groups 65 I1 --- Sam [1-4] Number of the membership sample providing the best solution 67- 69 I3 --- N2 Number of the cluster members of this sample within r2 71- 74 F4.1 pc rc Core radius (King) 76- 78 F3.1 pc e_rc rms error of King core radius 80- 83 F4.1 pc rt Tidal radius (King) 85- 88 F4.1 pc e_rt rms error of King tidal radius 90- 93 F4.1 --- k King's normalizing factor 95- 98 F4.1 --- e_k rms error of King normalizing factor 100-104 F5.3 [solMass] logM Logarithm of cluster mass 106-110 F5.3 [solMass] e_logM rms error of logarithm of cluster mass -------------------------------------------------------------------------------- Acknowledgements: Anatoly Piskunov ================================================================================ (End) Patricia Vannier [CDS] 23-Mar-2007